Elevator 1370 limit switch
Table of Contents
Lift 1370 limit switch
Limit switches S3-1370B
Elevator 1370 exchange-speed switch
Lift 1370 limit switch
S3-1370 limit switch, normally closed; the upper and lower limit switches
Technical parameters:
Rated working voltage: AC 220V; DC 110V;
Rated operating current: AC 2A; DC 0.3A;
Ordering the 1370 limit switch
To order the 1370 limit switch, send us a photograph of the existing unit and its nameplate at [email protected]. Please quote the complete code including any revision suffix so that our team can confirm the correct variant, current stock and lead time before you commit.
About the 1370 limit switch
Elevator and escalator installations are built around a relatively small number of serviceable assemblies, but they fail at very different rates. The 1370 limit switch sits in the switches / sensors / wiring group, and it is replaced on a different service interval from the assemblies around it. In practice the failures we see on 1370 limit switch come down to contact pitting, moisture ingress at the cable gland, drifted optical alignment, and brittle insulation on travelling cables after years of flexing.
Every 1370 limit switch we supply is inspected before dispatch. Each unit is checked for physical damage, correct marking and the specific wear or degradation patterns that matter for this class of component, then packed to survive international transit. Where a superseded revision is the only one available, we say so plainly and explain the substitution, so the installing engineer can make an informed decision rather than discovering the difference on site.
Buying guidance and compatibility notes
Before ordering the 1370 limit switch, confirm three things. First, the switch or sensor model, the mounting pattern, and the supply voltage and contact configuration (NO or NC). Second, contact configuration matters more than physical size — a switch that bolts straight on can still be electrically wrong. Third, whether the installation is a traction lift or an escalator, since duty cycle and loading differ between the two.
On fitting, one point is worth repeating: record the terminal numbers before disconnecting a travelling cable, since colour codes are not consistent between controller generations. Almost every repeat failure we see on 1370 limit switch traces back to a related component that was left in place, or to an adjustment that was assumed rather than measured.
Switches and sensors fail in ways that are rarely visible. Contact pitting, insulation that has become brittle, and optical surfaces that have clouded over all degrade performance long before the component stops working altogether.
Where the root cause is contact pitting that increases resistance without breaking the circuit, in our experience the mounting pattern, supply voltage and contact arrangement are all confirmed against the original before shipping.
Contact ratings matter more than physical fit. A relay that bolts into the same socket as the original can still be wrong for the application if its coil voltage or contact arrangement differs, and the resulting fault will appear somewhere else entirely in the circuit.
Lift electrics fail invisibly, and then they fail abruptly, which is why terminal numbers are recorded before a travelling cable is disconnected, since colour codes are not consistent between controller generations.
Inductive loads are hard on switching contacts. A contactor or relay that switches a motor or a coil will pit far faster than one carrying a resistive load of the same rating, which is why the same physical device can last years in one position and months in another.
The control circuit is the part of a lift where a small failure has the largest effect; the shaft environment is harsher than the machine room, so a component that tests correctly on a dry day can still fail in service.
Switches and sensors fail in ways that are rarely visible. Contact pitting, insulation that has become brittle, and optical surfaces that have clouded over all degrade performance long before the component stops working altogether.
Where the root cause is contact pitting that increases resistance without breaking the circuit, in our experience the mounting pattern, supply voltage and contact arrangement are all confirmed against the original before shipping.
Contact ratings matter more than physical fit. A relay that bolts into the same socket as the original can still be wrong for the application if its coil voltage or contact arrangement differs, and the resulting fault will appear somewhere else entirely in the circuit.
Lift electrics fail invisibly, and then they fail abruptly, which is why terminal numbers are recorded before a travelling cable is disconnected, since colour codes are not consistent between controller generations.
If you are unsure which variant of the 1370 limit switch you need, send a photograph of the nameplate and the existing component alongside a description of the fault. That is usually enough for our team to identify the correct replacement without a site visit, and it avoids the cost and delay of returning an incompatible part. We are also happy to advise on the other serviceable items in the same switches / sensors / wiring group, so a planned shutdown can cover several wear items at once.
Related parts and further reading
Because 1370 limit switch is only one item in the switches / sensors / wiring group, these related pages may help you plan the work:
- Elevator limit switches
- Elevator Levelling Sensor
- Elevator Encoder
- Elevator Push Button
- Elevator Display
Reference sources
The compatibility information on this page was cross-checked against the following authoritative references. Always confirm the exact reference against your own equipment nameplate.
Maqsood Hassan
LIMIT SWITCH MODEL# S3-1370B / ELEVETOR MAKE:BETO Qty 2 Nos
[email protected]
We have this LIMIT SWITCH to sale, There are Normally open Normally closed 2 kinds.
1370 is Normally closed ones